I love math tricks and so do my students! They are a great way to get kids thinking about numbers and operations whilst adding a bit of 'magic' to the process. Below is a fantastic math trick you could try with your kids that will get them multiplying, adding, doubling, dividing and subtracting . . . and if done right the answer will always be 15 no matter what number was chosen in step 1!
I like to use these at the start of a math lesson for a quick math mental warm up, or if there are a few precious minutes to spare that need to be filled with something educational.
I've included an example of the process underneath the image below.
Step 1: I'm thinking 100
Step 2: 100 X 3 = 300
Step 3: 300 + 45 = 345
Step 4: Double 345 = 690
Step 5: 690/6 = 115
Step 6: 115 - 100 = 15!
A 21st century School Teacher, Mother, and Wife.
This website uses marketing and tracking technologies. Opting out of this will opt you out of all cookies, except for those needed to run the website. Note that some products may not work as well without tracking cookies.Opt Out of Cookies